Character mistake: When Aiden and Melinda go the the hospital to visit Jim/Sam the picture on the hospital badge is of Jim Clancy not Sam Lucas... Jim has been in Sam's body for many years at this point. You can see the badge multiple times in the episode.
Character mistake: Jim is at the hospital - at the end of his phone conversation with Melinda, someone calls out "Dr. Clancy" when the character is Sam Lucas. (00:09:15)
Other mistake: In the scene immediately after the opening credits, Jim is talking to Melinda on the phone. Right as he's hanging up, someone calls out "Dr. Clancy? Got a minute?", to which Jim waves in acknowledgement and starts up the stairs. (Jim's spirit has been in Sam Lucas' body since season 4 and in an earlier season 5 episode, his white coat is embroidered S. James Lucas, M.D). (00:09:15)
The Crossing - S1-E2
Visible crew/equipment: After Hank Dale tells Steve Pinkus that he wants to know "How it feels to get away with murder," Hank throws a punch, and in the next wide shot we can see the second cameraman's arms holding an additional camera, presumably to film the close-up, at the right side of the screen. (00:32:35)
Firestarter - S4-E1
Visible crew/equipment: When Eli is at McShay's bar he hears the ghost beside him say, "Day after day after day," then when the bartender speaks to Eli, in the wide shots the shadow of the boom mic is visible right above the mirror. After Melinda walks in, when the bartender tells her that Eli scared all his business away, we can see in the mirror's reflection the boom mic dipping into view.
Continuity mistake: When Melinda is driving to Kirk's house she is in a Jeep Cherokee, but when she arrives she is in a Jeep Liberty.
Visible crew/equipment: When Melinda is at the VFW trying to get information on Paul Evans, she and Joe are alone with his wife's ghost, and after Joe tells Melinda that she can come by anytime for scintillating conversation, it cuts to a shot facing her and we can see equipment movement at the bottom right side of the screen.
Continuity mistake: After Jim and Aiden surprised Melinda with the new SUV Melinda drives off in the red vehicle, but when Aiden and Jim do their fist bump it cuts to a closeup of Jim, and the red SUV is still parked beside Jim.
Continuity mistake: When Jim joins Melinda on the bench to discuss the treatment records from Gabriel's institution, the heart locket on Melinda's neck keeps vanishing and reappearing repeatedly, depending on the angle of the shot. (00:07:50)
Plot hole: Jim taking over Sam's body just doesn't make any sense. It's plausible for a spirit to temporarily take over a living body, but a dead body is dead for a reason. It can't sustain life anymore. Death isn't a temporary ailment. It's permanent. What should have happened was the same thing that happened when another ghost took over a recently deceased person, which happened in a previous episode. The dead body would decay and start to lose function. Sam's body suddenly gaining back the properties of life is completely inconsistent with what we're led to believe in the setting of the show.
Suggested correction: This is a fictional show that pushed the boundaries and constantly changed the rules; how is this a mistake?
I tell myself that Sam's injuries were not as extensive as prom ghost so his body was able to stay alive.
I think what happened is that Sam jumped out and went into the light before they were able to revive him. Had he waited just a few more seconds next to his body He would have gone right back in. Some people die for a few seconds, and then they're able to bring them back through CPR or using the paddles and shocking his heart, etc.
The One (2) - S1-E22
Other mistake: The captain talks about the "outflow valve", which has a distinctive rectangular shape and is fitted flush with an opening in the aircraft skin. It would be immediately recognizable by any crew member because it part of the walkaround inspection before each flight. He is holding a round pneumatic supply valve instead, which is part of the internal ductwork.
Continuity mistake: When Melinda is talking to Kyle, her mole moves around several times.
Visible crew/equipment: When Melinda heads out to go on a run, while she and Sam/Jim are standing beside her car, in the shots facing Sam/Jim we see Jim's face, actor David Conrad, and in the car window's reflection we see Sam's face, actor Kenneth Mitchell, which is deliberate for viewers since Jim's spirit is in Sam's body. But just as Melinda says, "He worked a lot of weird hours, and liked to sleep-in a lot," it's amusing that in the reflection we can see both actors - David Conrad walking and then standing behind Kenneth Mitchell, both of whom play the same role and are wearing the same grey T-shirt.
Continuity mistake: When Melinda's hair is caught in the garbage disposal, she reaches for the switch and it is in the down position. When it switches back to her and then back to the switch, it is now in the up position.
Continuity mistake: While Melinda is driving to New England, her car switches from being a Jeep Cherokee to an Isuzu and back again.
Continuity mistake: At the end of the show when Jim is making toast they show him through the window taking the toast out of the toaster and putting it on the plate. In the next shot he is walking towards the kitchen table and the plate is empty. Then while talking to his mother he picks up a piece of toast to put jelly on it.
The One (2) - S1-E22
Other mistake: The tail and nose section of the crashed plane are from a 737, which has only a single axle on each landing gear. Landing gear with dual axles, from a much larger plane, can be seen in several scenes.
On the Wings of a Dove - S1-E8
Continuity mistake: When Melinda and Andrea are sitting on the couch in the antique shop talking Andrea's hand keeps moving back and forth between on her cheek and on the back of the couch.
Continuity mistake: When Melinda is driving to Clark's house when she is shown from a distance she is wearing a red hat. When they show her close up she is not wearing a hat.
Heart & Soul - S4-E8
Continuity mistake: After Sam reads the newspaper article about Jim's death it cuts to him dropping in to see Melinda, and when he's looking at the framed photographs on the sideboard two of the closeups of the photos are flipped shots - the positions of the frames are reversed.
